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The new V41 firmware version for the K-Ducer KDU-1A controller introduces several new features designed to enhance configurability, boost connectivity, and simplify calibration with K-TESTER systems.

When precision torque & angle control meets intelligent vision, automation becomes smarter, faster, and more reliable. Buchanan Automation, a trusted automation integrator, developed this innovative application combining Kolver’s K-DUCER KDS-PL70 electric screwdriver with Micropsi Industries’ MIRAI vision system.

This article describes steps to troubleshoot various Modbus TCP communication issues with the Kolver K-DUCER controller, although the methods are generically applicable to any Modbus TCP device. The troubleshooting methods are listed in increasing levels of complexity.

Modbus is a widely used communication protocol in industrial automation. It enables different devices, such as PLCs, sensors, drives, and precision tools like Kolver’s K-DUCER, to exchange data over serial or Ethernet connections. For automation engineers, Modbus is almost plug-and-play: most Ethernet-capable PLCs and industrial PCs/MES systems already support it.

When it comes to tightening tools, precision isn’t optional — it’s a requirement.
But how can we be sure that a screwdriver or torque tester truly meets the required standards?
The answer lies in certification. But beware: not all certifications are created equal.